Demountable wheel rim



Aug. 21, 1923. 1,4659% K. l. NUTTER DEMOUN'IABLE WHEEL RIM Filed July 25, 1921 2 3 if; j) 43 FVH/j', G 16 I NV EN TORJ ATTORNEY.

Patented Aug. Zl, 1923.

' KARL IQ NUTTER, or ManrInsvr Ln, rnnrana.

I DEMOUTITABLE WHEEL RIM.

Application ai d'iu 25, 1 921. sard ne 187,431.

Demountablel Vheel Rim, of which the folespecially lowing is a specification, reference being had to the" accompanying drawings and to the letters and figures of reference marked thereon. r

' This invention relates to a wheel ofthe type that is designed to have a removable pneumatic tire, more particularly anautomobile wheel, and the invention relates especially to a wheel having a rim that may be quickly removed with a damaged tire thereon, or be easily and quickly a'ppliedto the wheel with a new or repaired tire there-' on ready for use. An object of the invention is to provide an improved wheel and 'demountable rim that shall be of simple and reliable construction and not cost-lyin production, and

adapted for small wheel construction. 2 i

Another object is to provide a simple and powerful means for quickly securing a demountable rim to a wheel felly or felly portion and which shall be" capable of being easily operated. I

A further object is to provide simple and positive gearing in a vehicle wheel for tightening a demo'untable rim thereon and so as to be secure againstaccidental displacement under operatingconditions and which shall he durablej'and economical in use.

With the above-mentioned and other objects in view. the invention consists in a wheel provided with a power worm and operating- [rears therefor, and in a demountable rim having a worm-enga ine device whereby the rim may be forcibly moved 'circumferentially on the 'wheel, in connecita Per ph al v 9 Flie elli'f P t a covered by the improved rim.

the improved wheel; Fig. 4i is a sectional elevation of the improved rim; Fig. 5 is a fragmentary central section of the improved structure showing particularly "the means for moving the rim of the wheel; Fig. 6 is a fragmentary sectional view approximately nee VII-NH in' Fig. 5.

ent figures of'the drawings indicate like or corresponding elements or features of construction herein referred to in detail.

' As illustrative of the invention and purposes thereof a woodenlspoke wheel is shown which" comprises generally a hub 1, spokes 2 and afelly B, and it i's to be understood that the folly maybe practically a portion "of a disk wheel or'm'ay be a hollow metallic jfellysl'ightly modified. Inthe present case the felly is composed of wood and a rela- Similar reference characters in the -diii'er-.

on the line VI-VI in Fig. 5; and, Fig. is

a transverse section approxin'iately on thei tively smallmetallic section 4: constructed to constitute a. gear case'having an Outer peripheral face 5 conforming tojtheperiph- 'eral contour of the felly, and the sides of. the gear case form continuation's of the side v faces of the felly. The gearcase hasa cham her 6 that has an opening extending-to the face 5 and the case has also another chamber 7 therein separated bya partition 8 which is designed to constitute a io'urn al bearing,

and theendof thecase opposite to the partition" is adapted to constitute a journal, bearing 9. The gear case has a guard wall .10 projecting from the face 5 and extending about the opening of the chamber 6 to exelude dust'or mud fromthe chamber when I walls 11 and 12 of the chamber 7 are designed to constitute journal hearings. One end of the'g' ear case preferably hasfears 13 The side and lt'whicli areconnected'by means of a bolt 15 to'the adjacent portion of the wooden felly," and ithe opposite end of the gear case h'as'simila'r ears 16 and 17 which are con which has a suitable aperture throughwhich the wall 10 extends, and preferably the band has a iflan'ge 20 on the inner or rearward edge thereof. The outer face or periphery of the hand is provided with hearing blocks 7 21 suitably spaced apart, each block having anin'clinedend or wedge face 22 in a recess which has an m'cllned' s de wedge face 23 j presented towards the flange 20 and towards the opposite wall 2 of the recess.

A demountable rim 25 is designed to be placed on the telly band and loosely embrace the bearing blocks and it is provided on its inner side with a suitable number of wedge blocks 26 having each an inclined face 27 to co-operate with the end face 22, and the wedge block has a beveled or inclined face 28 adapted to co-operate with the face 28 to force the rim tightly to the flange 20, or so that the wedge blocks shall be tightly forced to the walls 24 in case the flange 20 is omitted from the telly band. The rim is provided also on its inner side with a lug 29 which has a gear tooth or teeth 30 on its end, the lug being'designed to be' entered into the chamber 6. The ring 25 has also flanges or beads 31 and 32 on its outer side .and preferably has aflange-like' ring 33 on its inner side that extends opposite to the front of the telly to prevent dust or mud from entering the space between the telly and the rim. A pneumatic tire 34L- is suitably secured to the rim in such manner as to per mit it to be removed and repaired.

A power worm is arranged in the chamber 6 of the gear case and comprises a body portion 35 which has two journals 36 and 37 arranged in the bearing chambers 8 and 9, respectively..jand the bodv portion has coarse screw threads 38 thereon to operate in connection with the teeth on the lug 29. Thejournal 36 has a bevel gear or toothed wheel 89 fixed'thereon so as to be inclosed in the chamber 7. An operating shaft 40 is arranged int-he chamber 7 and has journals 41 and 42 rotatively supported in the wall portions 11 and 12 respectively. and the shaft has a beveled gear or toothed wheel 43 fixed thereon that is in mesh with the gear 39. The shaft 40 has a squared terminal portion 44 which extends beyond the journal 42 into a recess 45 provided in the adjacent side of the gear case, the recess preferably having a cap d6 screwed into it to cover and protect the end of the operating shaft. 7

In. practical use a spare tire is carried on a rim in inflated condition. and when needed to replace a damaged tire the rim. by which the damaged tire is connected to the wheel. readily removed after operat ing the shaft 40 so as to operate the worm by which the rim is moved circumterentially so as to force the wedge blocks from the bearing blocks, after which the spare rim is put in placeon the wheel. first. inserting the lug 29 in the chamber 6 with the rim in tilted position and then swinging the remaining portion of the rim into place on the wheel felly. following which the shaft 40'is operated in the opposite direction to cause the wormv to move the rim andcause action of the wedging devices whereby the rim is forced back. against the stops designed for the purpose and simultaneously centered and tightened on the wheel telly. During operation of the wheel the worm threadsserve as a lockingabutmcnt preventing movement of the lug 29 and the demountable rim circumferentially, therefore insuring rigid locking connection of the wed ing devices between the telly and the rim. i V

.lVhat I claim is l 1. A vehicle wheel including a wheel telly, a hollow gear case secured in they telly and havinga relatively small lug-receiving opening in the outer wall portion thereof, a worm having two journals rotatably supported in the gear case adjacent to said opening, the worm being provided with gearing at the end of one of the journals to operate and control it, anda continuous wedgeequipped band embracing the telly and the gear case and fixedly secured thereto.

2. A vehicle wheel including a wheel telly,

a hollow gear case secured in the telly and constituting apart thereof, the peripheral portion of the gear case having a relatively small lug-receiving opening therein and'a guard wall extending aboutthe opening, a worm in the gear case adjacent to said open ingand provided withtwo rotatably supported journals, one of the journals having a gear onthe end thereof, and an operating shaft rotatablv supported in the wall of the gear case and having a gear thereon engaging the gear on the journal.

.3. A vehicle wheel including a wheel "telly, a gear case'secured in the telly and having chambers therein, one oi the chambers having a worm therein provided with a journal extending into the adjacent chamber, the journal having a gear thereon, an op crating shaft rotatable in said adjacent chamber an d having a gear thereon engaging the gear on the ournl. band on the telly, bearing blocks on the band. a rim extending about the telly and havinga lug device thererotatably supported in said segment, a rim extending about the band and having a luff devicefixed thereon and extending through said aperture and said opening and having engagement with the worm. and wedge blocks on the rim co-operating with th bearing blocks. V

5. A vehicle wheel including a, wheel felly,

a hollow gear case secured in the telly and having an opening extending to the pe riphery of the telly, the outer face of the gear case conforming to the periphery and having a Wall thereon extending about the opening, a worm rotatable in the gear case opposite to said opening, a band on the telly and having an aperture I'GCBlVlIlfI'SEllCl Wall,

bearing-blocks on the band, a rim extending about the band and over sa d wall and having a lug thereon extending through said opening, the lug being embraced by bination with a wheel 'fellv portion, of a gear case secured in the telly portion and having two chambers therein. a worm body arranged'in one of the chambers and.hav-' ing screw threads thereon,-sa1d body having alsojournal'ssupported in adjacent walls of said case, oneof the journals extending into the adjacent one ofthe chambers and having a bevel gear thereon, a driving shaft arranged in said ad acent one oi the chambers and having journals supported in the opposite walls ofthe chambers, one of the journals having a squared terminal portion, said shaft having a bevel gear thereon engaging the bevel gear on said journal, a cap secured to said case and covering said squared portion,-vand a rim having'a lug provided with a. screw thread segment for engagement with the screw threads on said worm body.

'7 In testimony whereof, I aiiiX my 's'ignature in presence of two Witnesses.

KARL I. NUTTER.

Witnesses:

E. T. SILVIUS,

ROBERT LIEBRIGH. 

